2555123120020 has 12 divisors (see below), whose sum is σ = 5365758552084. Its totient is φ = 1022049248000.

The previous prime is 2555123119999. The next prime is 2555123120021. The reversal of 2555123120020 is 200213215552.

2555123120020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1497936105604 + 1057187014416 = 1223902^2 + 1028196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555123120021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63878077981 + ... + 63878078020.

It is an arithmetic number, because the mean of its divisors is an integer number (447146546007).

Almost surely, 2^{2555123120020} is an apocalyptic number.

2555123120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2555123120020 is an abundant number, since it is smaller than the sum of its proper divisors (2810635432064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2555123120020 is a wasteful number, since it uses less digits than its factorization.

2555123120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127756156010 (or 127756156008 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 2555123120020 its reverse (200213215552), we get a palindrome (2755336335572).

The spelling of 2555123120020 in words is "two trillion, five hundred fifty-five billion, one hundred twenty-three million, one hundred twenty thousand, twenty".